Stephen D. Longon

EPL Oil & Gas, Inc. operated as an oil and natural gas exploration and production company. It was focused on acquiring and developing assets on state and federal waters offshore Louisiana in the United States Gulf of Mexico shelf region. The company was founded on January 29, 1998 and was headquartered in Houston, TX.

Dominion Exploration & Production, Inc. explores and produces oil and natural gas. It offers contract drilling and well operation services. Its products include crude oil, natural gas, and petrol. The company was founded in 2007 and is headquartered in Houston, TX

Vastar Resources, Inc. is one of the largest independent oil and natural gas exploration and production companies in the United States. The company is active in approximately 80 fields in some of the nation's most prolific producing areas, including the Gulf of Mexico, the Gulf Coast, the Oklahoma/Arklatex and the Rockies/Hugoton regions. In addition, the company's drilling rigs are exploring for new reserves both onshore and in the promising shelf and deepwater Gulf of Mexico drilling plays, the latter the site of rising industry activity and excitement.

Gulf Coast Energy Resources LLC engaged in the oil and gas exploration and production activities. The company was founded by Kevin P. Guilbeau in October 2010 and headquartered in Houston, TX.

Atlantic Richfield Co. provides oil and gas extraction and production services . The firm's exploration and production operations are focused primarily in the Gulf of Mexico and the midcontinent in the United States, the United Kingdom North Sea, Indonesia, China and Algeria. The company was incorporated on April 15, 1985 and is headquartered in Warrenville, IL.